I just enjoying the fact that everyone else in this manga is having sex with each other:
His "hero" friend is banging the princess, his other friend is banging the shortstacked, the shortstacked took the virginity of Mio who obviously likes the MC because plot and now she was having les sex with the angel.
Everyone....except the one damn person who just happen to have a harem, the MC. He tried once, ONCE with the cat girl and couldn't get it up and then he just stopped trying despite adding another 4 girls to his harem. Like is this a comedy where we just laugh at how much a doofus the MC is?